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Strontiopyrochlore

Big Photo

Vavnbed Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Pavel M. Kartashov

Show Strontiopyrochlore Photos (6)
Formula:
(Sr,Ce,Ca)
 
0.66
(Nb,Fe)
 
2
(O,OH)
 
7
Colour:Light yellow, white, ...Hardness:4
Name:Named as the strontium analogue of pyrochlore.


Pyrochlore Group

Classification of Strontiopyrochlore

IMA status:Rejected
Strunz 8th edition ID:4/C.17-40
Nickel-Strunz 10th (pending) edition ID:4.DH.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
Dana 8th edition ID:8.2.1.8

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
Hey's CIM Ref.:18.2.10

18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U
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Physical Properties of Strontiopyrochlore

Colour:Light yellow, white, light blue
Hardness (Mohs):4

Chemical Properties of Strontiopyrochlore

Formula:
(Sr,Ce,Ca)
 
0.66
(Nb,Fe)
 
2
(O,OH)
 
7
Essential elements:Nb, O, Sr
All elements listed in formula:Ca, Ce, Fe, H, Nb, O, Sr
Common Impurities:Ce,Ca,Fe

Relationship of Strontiopyrochlore to other Species

Related Minerals - Nickel-Strunz Grouping):
4.DH.05Brannerite
(U
4+
 
,Ca)(Ti,Fe
3+
 
)
 
2
O
 
6
4.DH.05Orthobrannerite
UTi
 
4
O
 
12
(OH)
 
2
4.DH.05Thorutite
(Th,U,Ca)Ti
 
2
(O,OH)
 
6
4.DH.10Kassite
CaTi
 
2
O
 
4
(OH)
 
2
4.DH.10Lucasite-(Ce)
CeTi
 
2
(O,OH)
 
6
4.DH.15Alumotungstite
(W,Al)(O,OH)
 
3
4.DH.15Bariomicrolite
Ba(Ta,Nb)
 
2
(O,OH)
 
7
4.DH.15Bariopyrochlore
(Ba,Sr)
 
2
(Nb,Ti)
 
2
(O,OH)
 
7
4.DH.15Betafite
(Ca,U)
 
2
(Ti,Nb)
 
2
O
 
6
(OH)
4.DH.15Bismutomicrolite
(Bi,Ca)(Ta,Nb)
 
2
O
 
6
(OH)
4.DH.15Calciobetafite
(Ca,RE,Th,U)
 
2
(Nb,Ta,Ti)
 
2
O
 
7
4.DH.15Ceriopyrochlore-(Ce)
(Ce,Ca,Y)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Cesstibtantite
(Cs,Na)SbTa
 
4
O
 
12
4.DH.15Ferritungstite
(W,Fe
3+
 
)(O,OH)
 
3
4.DH.15Jixianite
Pb(W,Fe
3+
 
)
 
2
(O,OH)
 
7
4.DH.15Kalipyrochlore
(K,Sr)
 
2-x
Nb
 
2
O
 
6
(O,OH)·nH
 
2
O
4.DH.15Microlite
(Ca,Na)
 
2
Ta
 
2
O
 
6
(O,OH,F)
4.DH.15Natrobistantite
(Na,Cs)Bi(Ta,Nb,Sb)
 
4
O
 
12
4.DH.15Plumbopyrochlore
(Pb,Y,U,Ca)
 
2-x
Nb
 
2
O
 
6
(OH)
4.DH.15Plumbomicrolite
(Pb,Ca,U)
 
2
Ta
 
2
O
 
6
(OH)
4.DH.15Plumbobetafite
(Pb,U,Ca)(Ti,Nb)
 
2
O
 
6
(OH,F)
4.DH.15Pyrochlore
(Ca,Na)
 
2
Nb
 
2
O
 
6
(OH,F)
4.DH.15Stibiomicrolite
(Sb,Ca,Na)
 
2
(Ta,Nb)
 
2
O
 
7
4.DH.15Stannomicrolite
(Sn,Fe,Mn)
 
2
(Ta,Nb,Sn)
 
2
(O,OH)
 
7
4.DH.15Stibiobetafite
(Sb,Ca)
 
2
(Ti,Nb,Ta)
 
2
(O,OH)
 
7
4.DH.15Uranmicrolite
(U,Ca,Ce)
 
2
(Ta,Nb)
 
2
O
 
6
(OH,F)
4.DH.15Uranpyrochlore
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Yttrobetafite-(Y)
(Y,U,Ce)
 
2
(Ti,Nb,Ta)
 
2
O
 
6
OH
4.DH.15Yttropyrochlore-(Y)
(Y,Na,Ca,U)
 
1-2
(Nb,Ta,Ti)
 
2
(O,OH)
 
7
4.DH.15Fluornatromicrolite
(Na,Ca,Bi)
 
2
Ta
 
2
O
 
6
F
4.DH.15Bismutopyrochlore
(Bi,U,Ca,Pb)
 
1+x
(Nb,Ta)
 
2
O
 
6
(OH)·nH
 
2
O
4.DH.15Thorian Pyrochlore
4.DH.15Elsmoreite
WO
 
3
·0.5H
 
2
O
4.DH.20Bismutostibiconite
Bi(Sb
5+
 
,Fe
3+
 
)
 
2
O
 
7
4.DH.20Bindheimite
Pb
 
2
Sb
 
2
O
 
6
(O,OH)
4.DH.20Monimolite
(Pb,Ca,Fe)
 
3
Sb
 
2
O
 
7
4.DH.20Partzite
Cu
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Roméite
(Ca,Fe,Mn,Na)
 
2
(Sb,Ti)
 
2
O
 
6
(O,OH,F)
4.DH.20Stetefeldtite
Ag
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Stibiconite
SbSb
 
2
O
 
6
(OH)
4.DH.25Rosiaite
PbSb
5+
2
O
 
6
4.DH.30Zirconolite
CaZrTi
 
2
O
 
7
4.DH.35Liandratite
U(Nb,Ta)
 
2
O
 
8
4.DH.35Petscheckite
UFe(Nb,Ta)
 
2
O
 
8
4.DH.40Ingersonite
Ca
 
3
MnSb
 
4
O
 
14
4.DH.45Pittongite
Na
 
0.22
(W,Fe
3+
 
)(O,OH)
 
3
 · 0.44H
 
2
O
Related Minerals - Hey's Index Grouping:
18.2.1Fergusonite-(Y)
YNbO
 
4
18.2.2β-Fergusonite-(Y)
YNbO
 
4
18.2.3Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
18.2.4β-Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
18.2.5Fergusonite-(Nd)
(Nd,Ce)(Nb,Ti)O
 
4
18.2.6β-Fergusonite-(Nd)
(Nd,Ce)NbO
 
4
18.2.7Formanite-(Y)
YTaO
 
4
18.2.8Pyrochlore
(Ca,Na)
 
2
Nb
 
2
O
 
6
(OH,F)
18.2.9Ceriopyrochlore-(Ce)
(Ce,Ca,Y)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
18.2.11Loparite-(Ce)
(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
 
3
18.2.12Fersmite
(Ca,Ce,Na)(Nb,Ta,Ti)
 
2
(O,OH,F)
 
6
18.2.13Aeschynite-(Ce)
(Ce,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.14Aeschynite-(Nd)
(Nd,Ce,Ca)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.15Aeschynite-(Y)
(Y,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.16Nioboaeschynite-(Ce)
(Ce,Ca,Th)(Nb,Ti)
 
2
(O,OH)
 
6
18.2.17Niobo-aeschynite-(Nd)
(Nd,Ce)(Nb,Ti)
 
2
(O,OH)
 
6
18.2.18Tantalaeschynite-(Y)
(Y,Ce,Ca)(Ta,Ti,Nb)
 
2
O
 
6
18.2.19Vigezzite
(Ca,Ce)(Nb,Ti)
 
2
O
 
6
18.2.20Murataite-(Y)
(Na,Y)
 
4
(Zn,Fe)
 
3
(Ti,Nb)
 
6
O
 
18
(F,OH)
 
4

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Strontiopyrochlore

Reference List:Doklady (1986), 290, 1212-1217.

American Mineralogist (1988): 73: 930.

Voloshin, A.V., Pakhomovskiy, Ya.A., Pushcharovskiy, D.Yu., Nadezhina, T.N., Bakhchisaraitsev, A.Yu., and Kobyashev, Yu.S. (1989) Strontiopyrochlore: composition and structure. Trudy Mineralogicheskogo Muzeya AN SSSR: 36: 12-24 (in Russian).

Internet Links for Strontiopyrochlore

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    Localities for Strontiopyrochlore

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    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Mongolia
     
    • Hovd Aimag (Khovd Aimag)
      • Altai Mts
    		P.M. Kartashov data
    Russia
     
    • Eastern-Siberian Region
      • Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai)
    		Re-entry of old data
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Lovozero Massif
    USA
     
    • Alaska
      • Fairbanks North Star Borough
    		www.cannonmicroprobe.com/Mineral_Specimens.htm
    • Arkansas
      • Garland Co.
        • Wilson Springs (Potash Sulfur Springs)
          • Union Carbide Mine
    		R&M 70:3 pp 154-170
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